My father was an architect and there were generations of engineers before him (you can find my ancestor Francis Campin's texts online). So I grew up with graphic equipment as toys, and have drawing instruments going back to the 19th century. I do hand lettered notices for my work (much faster than computer typesetting and they look better), which involves several different pens at once and occasional use of blotting paper.

I also have a shitload of slide rules and similar analogue calculators. Wish I had a planimeter and a use for one.